Carbon dioxide (CO₂) has long been seen as a harmful by-product of industry and energy production, and efforts have been made to reduce it through emissions trading and regulation. Biogas and biomethane plants are already carbon neutral through biogenic carbon dioxide emissions, i.e. they do not contribute to atmospheric carbon dioxide. Unlike fossil fuels, the carbon dioxide produced in the biogas process is biogenic part of nature's already existing cycle. It is not a new emission, but ’borrowed’ from the air as plants grow. When we capture this carbon dioxide, we convert it from waste to raw material. It is recycled carbon that replaces virgin raw materials in industry.
At the same time, however, CO₂ is an essential and widely used raw material for many industries. Now the roles are changing: biogenic carbon is emerging as a key component of a carbon-neutral and even carbon-negative circular economy.
Biovoima responds to this change with a new BIOliquefierCO2-solution, which enables the capture, purification and liquefaction of carbon dioxide from biogas and biomethane plants for industrial use. This new technology is the result of a research and development project carried out by Biovoima's Product and Production Director Toni Hiltunen together with his team. The technology transforms a side stream that previously ended up in the atmosphere into a high-quality, commercially viable product.
Biovoima is currently supplying Finland's first biogenic carbon dioxide capture and liquefaction plant for Auris Energia´s Mäntsälä biogas plant. The BIOliquefier will be integrated into the biogas upgrading process. The carbon dioxide produced during the biomethane upgrading process is captured, purified and liquefied, making it suitable for industrial use and efficient logistics. The plant also has the capacity to refine CO₂ to food industry standards.
According to the Auris Energia article The Mäntsälä plant will produce approximately 3 500 tonnes of bio-based carbon dioxide per year, which can be diverted for industrial use instead of being released into the atmosphere using BIOliquefier technology.
”We have been developing the carbon negative biomethane production chain for a long time. This project is a major breakthrough and development in the capture and utilisation of biogenic carbon dioxide on an industrial scale,” says Biovoima's CEO Eero Tilsala.
BIOliquefierCO2 solution recovers carbon dioxide from CO₂-rich gas, thoroughly cleans it of impurities and dries it before liquefaction. The end result of the process is a high purity CO₂ of up to >99.9 %, which meets the quality requirements of demanding industrial applications and is able to meet quality standards for CO₂ in the food and beverage industry, such as EIGA and ISBT. The technology supports high and consistent CO₂ quality in applications where purity and traceability are critical.
Carbon liquefaction enables efficient storage and cost-effective distribution of carbon dioxide to end-users. At the same time, it creates a new saleable product and additional revenue opportunity for biomethane plants.
Biovoima´s Sales Manager Mikko Bengts has been following the development of the carbon market for a long time and sees significant business potential in biogenic CO₂:
”Biomethane production creates a new value chain for biogas plants and BIOliquefierCO2 - carbon capture and liquefaction technologies can significantly expand this value chain. This will improve the profitability of the plant, make more efficient use of side streams and increase the positive climate impact.
The biogas market is changing, and the future will be driven by those players who take a critical look at their value chains and seize new production and revenue opportunities early. Now is the time to be proactive.”
The carbon dioxide produced by the Auris Energia plant will be sold to the concrete industry. The use of CO₂ in concrete reduces the need for cement and permanently sequesters carbon in the building material - an excellent example of the intelligent use of carbon dioxide.
In biomethane plants, without carbon capture, the carbon dioxide is a side stream. When captured, CO2 becomes a new saleable product for biomethane plants and has a significant positive economic impact on the value of biomethane through emission reductions, with a significant improvement in the specific emission factor of biomethane.
BIOliquefierCO2-technology integrated, a biogas plant is no longer just an energy production plant. It can act as as an integrated purification and processing plant, which produces simultaneously:
Biovoima´s BIOliquefierCO2 makes carbon capture and liquefaction technically and economically viable and brings biogas and biomethane plants to a new level in the green transition value chain.
Nordic countries: Mikko Bengts mikko.bengts@biovoima.fi | +358 50 5490882
Baltics: Evald Pärni evald.parni@biovoima.fi | +372 501 2238
Poland: Robert Domaradzki robert.domaradzki@biovoima.fi | +48 795 141 368
Sales Director Jani Kangasaho jani.kangasaho@biovoima.fi | +358 50 468 7907
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